fix(Dropdown): add checking if ref exists on dropdown (#958)
fix(Dropdown): add checking if ref exists on dropdown (#958)

* fix: add checking if ref exists on dropdown

* Update src/Dropdown.tsx

Co-authored-by: Jason Quense <12aa23fd1d1f5a8abefe5c0a553ad73bfd98bc10@gmail.com>

* linting

Co-authored-by: Jason Quense <12aa23fd1d1f5a8abefe5c0a553ad73bfd98bc10@gmail.com>
react-bootstrap/react-overlays,react-bootstrap/react-overlays,react-bootstrap/react-overlays